Dave,
I have built both. I enjoyed each, but the Hasegawa offering has a more accurate overall outline when they sit side by side. It is simplified, however, and can benefit from AM for sure, especially the engine. The Trumpeter Jug has lots more detail, but most of it is more trouble than it is worth. I left most of it out. You really can't go wrong with either one, though.
Both of mine are floating around here on LSP, but for some reason I can't get the links to copy into this post.

Hi Tim. These tracks were actually pretty easy to use. I know a lot of people balk at single links, so these are a nice compromise between realism and ease of assembly. I don't really mind either way, at least on the big vehicles where the single links are easier to handle. Both types are vastly superior to the old vinyl tracks.